丝素纳米银的制备及其对棉织物的改性实验研究

Preparation of Silk Fibroin Stabilized Silver Nanoparticles and Their Application for Modification of Cotton Fabric

本研究以丝素为保护剂,葡萄糖为还原剂,制备丝素纳米银水溶液,其纳米银粒径在10 nm左右,具有良好的分散性和稳定性。棉织物经丝素纳米银水溶液整理后,其载银量能达到373.1 mg/kg,对大肠杆菌和金黄色葡萄球菌的抑菌率分别为98.36%和98.50%,经50次洗涤后其抑菌率仍能保持在92%以上。同时,整理后棉织物表面摩擦系数和表面粗糙度均有所降低,光滑度增加。

This experimental study takes silk fibroin as protective agent and glucose as reducing agent to prepare the silk fibroin solution containing nano silver particles in size of about 10 nm with good dispersity and stability. The test results show that after being finished by silver nanoparticles, the cotton fabric samples can have an Ag-carrying amount of 373.1 mg/kg and their antibacterial rate against Escherichia coli and Staphylococcus aureus is up to 98.36% and 98.50% respectively. The antibacterial rate could maintain at 92% even after 50 washing cycles. Meanwhile, the surface friction coefficient and roughness of the treated fabrics redticed, which means smoother surface of the fabric.